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Johnston, RI Weather Forecast

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Johnston, RI Weather Forecast

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Johnston RI weather - Lightning Observed - 70°F
Lightning Observed
70°F
Updated 5:20 am
Feels Like 72°F
Humidity 96%
Wind N 0 mph
Barometer  29.82 in
Dew Point 69°F
Johnston RI weather - Lightning Observed - 21°C
Lightning Observed
21°C
Updated 5:20 am
Feels Like 22°C
Humidity 96%
Wind N 0 km/h
Barometer  101 kPa
Dew Point 21°C
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Johnston Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Johnston, RI Weather - Today Patchy Fog Johnston, RI Weather - Tonight Mostly Clear Johnston, RI Weather - Saturday Partly Sunny Johnston, RI Weather - Saturday Night Partly Cloudy Johnston, RI Weather - Sunday Mostly Sunny Johnston, RI Weather - Sunday Night Mostly Clear Johnston, RI Weather - Labor Day Sunny Johnston, RI Weather - Monday Night Partly Cloudy Johnston, RI Weather - Tuesday Sunny Johnston, RI Weather - Tuesday Night Partly Cloudy Johnston, RI Weather - Wednesday Partly Sunny Johnston, RI Weather - Wednesday Night Chance Of Showers
Patchy Fog Mostly Clear Partly Sunny Partly Cloudy Mostly Sunny Mostly Clear Sunny Partly Cloudy Sunny Partly Cloudy Partly Sunny Chance of Showers
Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 75°FHi: 24°C
 Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 71°FHi: 22°C
 Lo: 61°FLo: 16°C
POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 402 AM EDT Fri Sep 04 2026 Johnston, RI Weather - WeatherWorld.com

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Issued: 213 AM EDT Fri Sep 4 2026

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... KEY MESSAGE 1. Mainly dry and pleasant today and Saturday with a chance for some isolated showers Saturday afternoon.

Looking drier and mild over the next couple of days as broad NW flow around a closed low advects a lower PWAT airmass into the region. PWAT values fall below 1.00" by this afternoon into Saturday. Despite the overall drier airmass, a broad cutoff low over the Canadian Maritimes will maintain a non-zero chance of isolated showers today and Saturday. The greatest chanc...